Linseed-oil substitute



UNITED STATES PATENT OFFICE.

MAJac DABRIN, or WILKINSBURG, PENNSYLVANIA, ABSIGNOB, To KOPPERS rnonucrs COMPANY, A coRroaA'rioN or PENNSYLVANIA,

LINSEED-OIL SUBSTITUTE No Drawing.

To all whom it may concern:

Be it known that I, MARC DARRIN, a citizen of the United States, residing at l/Vilkinsburg, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Linseed-Oil Substitutes, of which the following is a full, clear, and exact description.

The present invention relates broadly to oils and more particularly to an oil intended for use as a substitute for linseed oil.

An important object of the present invention is to provide a substitute for'linseed oil having certain advantages over linseed oil due to chemical inertness, resistance to the action of alkalis, and electrical insulating properties.

Another important object of the invention is to provide a substitute of this type which may be inexpensively roduced as compared to linseed oil, due to t e com aratively low cost of the various ingre ients em loyed.

he chief ingredients used in the manufacture of my linseed oil substitute are coumarone resin, coal tar oils, drying or semidrying paint and petroleum oils. Any variety of coumarone resin may be used, either,

an acid polymerized or a heat polymerized type. It is understood that by coumarone resin I refer to the general coumarone type which includes indene resin and also certain lproportions of related resins which are usua 1y produced in conjunction with conmarone and indene resins, such, for example, as polymerized styrolene and polymer zed dicyclopentadiene, also the polymerized homologues of coumarone such as poliymerized methyl coumarone, polymerized imethyl coumarone, etc.

Regardin the coal tar oils, it is refer-' able to emp oy a benzol product of t e solvent naphtha variety. Such a product serves to bring the resin into solution andto keep the resin in solution after the addition of other ingredients. In the process of manufacture of coumarone resins these resins are usually in solution in solvent naphtha from which the resins are separated in a later operation by distillation. or the purpose o my invention it is not always necessary to separate this solvent naphtha from the resins. In many cases the resins and the solvent naphtha occur in suitable propor Specification of Letters Patent.

Patented June 21, 1921.

Application filed February 7, 1920. Serial No. 357,029.

are small amounts of volatile impurities present which impart an undesirable odor. n this case it is best to separate the resins I IOm thB impure solvent naphtha by a distillation process, and then to incorporate the resin with a purified solvent naphtha.

For the vegetableoils, I refer to use e ther linseed oil, China woo oil, soy bean oil, Perilla oil, cottonseed oil or the like, or a combination of these oils. The addition of such paint oils in amounts from 10% to 50% by volume imparts an odor and general properties to the material which is desirable in many instances. In some cases the odor of the material can be changed very materially by the addition of certain volatile oils, as for instance, dition of certain of the light boilin distillation oils, serve admirably to isguise the solvent naphtha odor. Although the odor of solvent naphtha is not injurious in itself, the average painter is prejudiced against odors with which he is not familiar.

Regarding the petroleum oils, I have not always found it essential to incorporate such oils in my linseed oil substitute, but the use of such an oil lessens the cost of the roduct and can be used to advantage in certain cases where a particularly hard drying product is not required. It will be apparent that the amount of petroleum oil employed, if any, may vary considerably.

be following formula I have found very suitable:

40 parts coumarone resins,

40 parts solvent naphtha,

20 parts linseed or other oils or combinations. thereof.

Of course it is understood that roportions can be varied within wide limits and many other materials may be used in addition to those mentioned above without departing from the essence of my invention, such as etroleum oils. together with volatile woo distillation oils for purpose of improving the odor, etc.

claim:

1. A liquid mixture incliiding a solution of heat pol erized coumarone resins in a solvent napli t ha and a paint.

2. A liquid mixture including a solution of coumarone resins, in solvent naphtha and linseed oil.

3. A linseed oil substitute comprising a solution of a heat polymerized ooumarone resin.

4. A linseed oil substitute comprising a solution of a heat polymerized coumarone resin, and a paint oil.

5. A linseed oil substitute comprising a solution of a heat polymerized coumarone resin, a paint oil and a volatile oil serving as a deodorant.

(3. A linseed oil substitute comprising a solution of heat polymerized eoumarone resins in solvent naphtha.

7. A linseed oil substitute comprising a solution of heat polymerized coumarone resins in solvent naphtha and a paint oil.

8. A linseed oil substitute comprising a solution of heat polymerized eoumarone resins in solvent naphtha, a paint oil arid a petroleum oil.

9. A linseed oil substitute comprising a solution of coumarone resins in solvent naphtha and linseed oil.

10. A linseed oil substitute comprising a solution of eoumarone resins in solvent naphtha, linseed oil and a volatile oil serving as a deordorant.

11. An oil substitute comprising in solution coumarone resins, solvent naphtha, and a deodorant.

12. An oil substitute comprising in solution coumarone resins, solvent naphtha, a paint oil, and a petroleum oil.

In testimony whereof, I have hereunto set my hand. MARO DARRIN.

It is hereby certified that in Letters Patent No. 1,382,345, granted June 21, 1921, upon the application of Marc Darrin, of Wilkinsburg, Pennsylvania, for an improvement in Linseed-Oil Substitutes," an error appears inthe printed specification reqliiring correction as follows: Page 1, line 107, claim 1, after tho word "paint insert the word 0111; and that the said Letters Patent should be read with this correction thsrein that the some may conform to tho rocord of the case in the Patent Office.

Signed and sealed this 30th day of August, A. D., 1921.

no.1 KARL FENNING,

Acting Commissioner of Patents. 

